[1O01-07] Tungsten Materials (Behavior of Hydrogen Isotope)

[1O06] Influence of long discharge on hydrogen retention capacity of tungsten exposed to hydrogen plasma in QUEST

*koike ayaka¹, togari akihiro², nakata moeko², zhao mingzhong², sun fei¹, yosida naoaki³, hanada kazuaki³, ooya yasuhisa¹ (1. Faculty of science,Shizuoka uni., 2. Graduate school of science and Technology, Shizuoka univ., 3. Research Institute for Applied Mechanics, Kyushu uni.)

Keywords:tungsten, QUEST, plasma exposed, Hydrogen isotope retention behavior

To evaluate the hydrogen isotope retention behavior in tungsten exposed to plasma at QUEST. The chemical state and the retention behavior of hydrogen isotope were investigated by XPS measurement and TDS, respectively. The retention behavior was associated with the damage and deposition which are depended on the discharge condition and sample position in QUEST.